Inventor · disambiguated record
Norman E. Harthun
Also filed as: HARTHUN NORMAN · HARTHUN NORMAN E · HARTHUN NORMAN EDWARD
9 granted patents·179 citations·filing 1975–1997
90Inventor score
Top patents by PatentIndex Score
9 records- 0190US4303386AParallel flow burnerCOEN CO·Filed 1979·Granted Dec 1, 1981·55 cites·28 claims
- 0267US4159025ABack flow preventer valveTELFORD L SMITH·Filed 1977·Granted Jun 26, 1979·22 cites·5 claims
- 0366US4356970AEnergy saving fuel oil atomizerCOEN CO·Filed 1980·Granted Nov 2, 1982·27 cites·38 claims
- 0461US4462795AMethod of operating a wall fired duct heaterCOEN CO·Filed 1983·Granted Jul 31, 1984·13 cites·3 claims
- 0555US4230449ASelf contained compact burnerCOEN COMPANY·Filed 1979·Granted Oct 28, 1980·13 cites·7 claims
- 0655US3982561ACombination surge relief and back flow prevention valveTELFORD SMITH INC·Filed 1975·Granted Sep 28, 1976·15 cites·6 claims
- 0750US6022213AGas fired heaterPAPER MACHINERY CORP·Filed 1997·Granted Feb 8, 2000·15 cites·5 claims
- 0850US4286945AWall fired duct heaterCOEN CO·Filed 1979·Granted Sep 1, 1981·11 cites·47 claims
- 0947US4375952AWall fired duct heaterCOEN CO·Filed 1980·Granted Mar 8, 1983·8 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →